#三行四列
for i in range(1,4):#外层循环控制行数
    for j in range(1,5):#内层循环控制列数
        print('*',end='')
    print()#换行

print('-----------------')

for i in range(1,6):
   for j in range(1,i+1):
       print('*',end='')
   print()

print('-----------------')

for i in range(1,6):
    for j in range(1,7-i):
        print('*',end='')
    print()

print('-----------------')

for i in range(1,6):
    for j in range(1,6-i):
        print(' ',end='')
    for k in range(1,i*2):
        print('*',end='')
    print()



